Process for rolling tie-plates.



W. J. BRADLEY.

PROCESS FOR ROLLING TIE PLATES.

,APPLICATION FILED MAR.20, I915.

Patented Sept. 12, 1916.

5,SHEETSSHEET 1.

unk wows W. J. BRADLEY. PROCESS ma ROLLING TIE PLATES.

APPLICATION FILED MAR 20, I915- Patented Sept. 12, 1916.

5 SHEETS-SHEET 2- Kim/J4 J 54, 404 51 w.1. BRADLEY.

PROCESS EQR ROLLING TIE PLATES. APPLICATION man MAR. 20, 1915.

Patented Sept. 12, 1916.

5 SHEETS-SHEET 3.

,w. .I. BRADLEY. mocas r'oa noume ms PLATES. APPLICATION FILED l-Yl AR 20, l9l5- Patented Sept. 12, 1916.

5 SHEETSSHEET 5.

' a citizen of the lengths for use.

WILLIAM a. BRADLEY, or TROY, PANY, or new YoaK,

NEW YORK,. ASSIGNOR TO THE RAIL JOINT COM- N. Y., A CORPORATION OF NEW YORK.

PROCESS FOR ROLLING- TIE-PLATES.

memos,

Specificatiers Patent. Patentqgflj Sept 12 1916' Application filed March 20, 1915. Serial No. 15,790.

To all whom it may concern:

" Be it known that 1, WILLIAM J. BRADLEY, United States, residing at Troy,'in the county of Rensselaer and State of New York, have invented certain new and useful Improvements in Processes for Rolling Tie-Plates, of which the following is a specification. I

This invention relates to of railway tie-plates, and more particularly to the making of a special-design of' tieplate combining the functions of 'a rail seat and an anti-creeper to prevent longitudinal creeping of the rail.

To this end, the invention contemplates anovel process for making this special design of anti'creeper tie-plate in the passes of a rolling mill, whereby the device can be manufactured in an economical and commercial manner, similar to the method employed in rolling rail joint bars from the billet and shearin the finished section into A further object of the invention is to provide a thoroughly practical way for obviating the difficulties which would ordi- L narily be met in making the special design of tie-plate referred to, while at the same time making the process entirely commercial by the employment of means whereby the rolled tie-plate may be readily adapted for different widths of rail base flanges.

ith these and many other objects in view which will appear to those familiar with the rolling mill art, the invention consists in the novel process steps hereinafter more fully described, illustrated, and claimed.

The essential features of the invention are necessarily susceptible of modification to a reasonable extent without departing from the scope ofthe appended claims, but for the purposes of illustration, the drawings show a preferred method of carrying the invention into effect both as to process and means.

In these drawings, Figure 1 is an elevation of a set of rolls in a rolling mill having a series of passes specially designed to carry out the present invention. Fig. 2 is an enlarged view of the portions of the rolls forming the leader and final passes which com-v plete the tie-plate bar, which is subsequently cut up into tie-plate units. Fig. 3 is a plan view and a projected side view of one of the marginal die rings of the roll of the finishthe manufacture -final pass of ing pass to give final form to one marginal portion of the bar. Fig. 1 is a similar view of the correspondingly opposite marginal die ring for the other marginal portion of the bar. Fig. 5 is a side elevation and projected edge view ring of thefinishing roll, showing the individual die units thereof removably interlocked in the peripheral keeper sockets therefor. Fig. 6 is a similar view ofthe same ring with the die units thereof removed. Fig. 7 is a series of projected views of one of the individual die units of the former ring. Figs. 8 to 12 inclusive are a series of cross sectional views illustrative of the progressive development of the bar as. Fig. 13 is a shaped by the various passes. plan view of the finished baras it leaves the the series, indicating by/ dotted lines the line of cut or shear for severing the bar into tie-plate lengths. Fig. 14 is a detail in perspective of the special design of anti-creeper tie plate which is the rolling mill product made Like reference characters designate corresponding parts throughout the several figures of the drawings.

The improvements claimed herein are of special importance and utility in the manufacture of a special design of railway tieplate having ing a part of an anti-creeping device to prevent creeping of the rails. This particular metal shape presents diiiicut rolling mill problems which are successfully taken care of by the present invention, so for illustrative purposes the said shape is shown in Fig. 14; of the drawings.

Referring to the structural characteristics of the anti-creeper tie-plate, or metalshape, which it is proposed to make by the process and apparatus of the present invention, it will be observed that the same essentially comprises a rectangular plate body 1' provided at the upper side thereof with a flat rail seating floor 2. ,At the opposite marof the intermediate former the additional function of be-- by the present invention.

gina'l edge portions. of its floor2, the plate inside rail flange bearing I shoulders 6, and at their completed article.

W the roll mandrel blank and also to elimination of metal necessary to provide a product having the functional characteristics required thereof.

shape has central portions are also preferably formed with raised curving and outwardly and downwardly inclining bearing projections 7 which maybe utilized a a or abutments for the unbearmg points head spikes, if that type der side of screw of fastening is .used for fastening the tieplate to the tie.

-A feature of the tie plate construction 1a which presents a difliculty that is not overcome by the ordinary rolling mill processes or rolls is that of of theribs (4) having its shouldered edge deflected outwardly into the form of an approximately V-shaped. recess 8,'who se separate inclined portions are outwardly convergent. Also, in connection with this 'detail of the tie-plate, the flat floor of thehas countersunk therein a body thereof clearance recess 9 lying immediately adjacent the edge recess 8 and representing an at a point where it is This special design of tie-plate or metal its inception in a billet or bar blank which is progressively developed and shaped in a series of passes of a-set of mill rolls which are generally designated in the drawings by the C. The metal shape or bar is proximately primary form and size in the first pass of the rolls This pass is desig nated by the numeral I and the walls thereof are formed by roll ducing collars 10' provided with circumferential or peripheral grooves 11 Whichare spaced apart in a manner to effect a reduc? tion of the bar in its middle portion, and a displacement of the metal upon both sides thereof into the form of rounded ribs 1'. This metal shape is shown in Fig. 8 ofthe drawings, and it will be observed that the rounded ribs r sides of the barblank, and those at one side of the blank are directly opposite relation to those at the opposite side of the blank, thereby leaving a substantial body of metal adjacent both of the lateral edges of the blank to provide for the full and proper development of the ribs in the shape delivered from'the first pass of the rolls is then acted upon by the rolls forming the second pass II, which is partly formed by one of' the rolls of the first pass and a roll member having an intermediate spreading collar 11 formed with beveled edges 12, and rounded former rings l3 placed upon at opposite sides of the col-. The effect of this roll formation at the second ass II is to initiate the rounded externa form of the ribs at'what may now be termed the upper side of the bar initiate the proper separalar 11.

the central portion of one. 'the'blank is of the inside flat members having re- 'dlstance is determined by pass IV.

are arranged in pairs at both- .roll members,

and ample changeable with The double ribbed metal roll member for ing ribs 7- at both sides thereof.

The next step in the process is to provide for the final shaping and spacing of the inside flat bearing. shoulder 6, and in this operation the necessary additional metal to provide for the full and properformation of the shouldered ribs at the upper side of supplied from the bodyof metal in the ribs During this process of reduction and redistribution of metal, the projecting ribs of metal at the under side of the blank disappear. The said final shaping and spacing bearing shoulders 6 is accomplished in passes III and IV of the rolls. With respect to pass III, it will be pass is provided between roll members, one of which has a reducing .collar 10 formed with'shallow peripheral grooves 14 of less depth than the preceding grooves 11', and the other of which roll members includes rounded former rings 15, vious rings 13, and intermediate reducing rings 16 and 17 which further develop the flat floor 2 of the bar blank, and one of which rings, designated by he reference be termed a rib-gaging dieat theunder side of the blank.

,noted from 1 of the drawings that this similar to the prering. This latter ring is readily removable I.

and replaceable and is employedin varying sizes according to the required distance be tween the inside bearing shoulders 6, which the width of the rail base flange. rt er reduction and shaping. to determine the distance between the inside shoulders 6 and the final working out of the projecting ribs from the base or under side Afuh s pass is provided between one of which substantially consists of a plain reducing collar 18 which flattens. the base. The other roll member of the pass IV comprises rounded marginal former rings 19, and intermediate reducing rings 20 and 21, the latter like the rings 17 being a rib-gaging die-ring and interother sizes.

The final reduction and shaping of the bar blank occurs in the final pass of the series designated by the The latter pass is provided between roll members,

one of which substantially consists of a plain reducing collar 22 which maintains the flat formation of the base or under side of the blank. The' other roll member for this al pass embodies important and practica features of construction because of the difiiculty involved in rolling into form thefinal details of the tie-plate blank. The structural elements of this other the final pass are plainly reference number V.

of the blank are effected in shown in Figs. 2 to 7 inclusive of the draw ings. The said roll member essentially in-' pair of opposite marginal die-rings 24 and 25 of substantially duplicate construction, though usually being of a difierent width to adapt them respectively to the diflerent widths and slightly differing locations of the opposite raised rib portions 3 and 40f the tie-plate blank. Referring more particularlyto these marginal die-rings 24 and 25, it is to be noted that the same are formed with compoundly curved or sigmoidal surfaces which give a final reduction and shape to the corresponding surfaces 5 of the said rib portions 3 and 4. Furthermore, the said rings 24 and 25 are provided about their peripheries with a continuous alternation of die recesses 26 and die projections 27 and 28 respectively, so that as the said rlngs roll upon the marginal edges of the bar blank, the same will not only give final form and size to the ribs 3 and 4, but will also develop and shape the raised bearing projections 7 on the said ribs. 1 c

7 One of the distinctive features of the invention, with respect to the apparatus is that of the intermediate forming ring 29 which constitutes one of the active elements of the sectional roll member made up of the rings 17 23, 24, and 25. The intermediate forming ring is provided in its periphery with a plurality of dove-tailed or equivalent shaped keeper sockets 30 adapted to have interlocked therewith the correspondingly shaped holding tongues 31 forming a part of the individual die units 32 which are carried by the rings. The said forming ring 29 is clamped in place between one of the collars 23 anu. the marginal die ring 25, thereby being well and strongly backed by the collar 23, which is a necessary feature because of the lateral strain imposed upon the said forming ring in performing its work in the final pass.

The individual die units 32 are specially designed to perform the double function of shaping the ll-shaped edge recess 8 in the rib 4 of the tie-plate blank, and also the countersunk recess 9 in the floor of the blank. Accordingly, each of said units 32 is provided with a flat outer end having a sufficient projection beyond the adjacent collar 23 to displace metal from the floor of the blank and produce the said recess 9, and is also provided upon one side thereof with a projecting substantially ll-shaped or angular die face 33 which impresses itself into the metal of the inside edge of the rib 4 and displaces the same in directions that will leave the reentrant approximately V shaped recess 8 which is a required detail of the finished product, so that the latter may perform its anti-creeper functions; In connection with this special design sectional lower member for the final pass, it will be readily understood from the foregoing that breakages of roll parts are practically limited to the individual die-units 32 which are readily removed and replaced with little expense. At the same time the construction described provides for an economic and practical distribution of metal so that the required weight and strength of tie-plates may be successfully manufactured.

As clearly shown in Fig. 13 of the drawings, the bar blank as it leaves the final pass of the rolls is formed with a succession of tie-plate units, and these units are separated or out OK from the blank by a shear or other means as indicated by the dotted lines XX in Fig. 13. Punchings for fastening spikes may be made in the bar blank or in the individual unitsv out off therefrom as preferred or desirable.

From the foregoing it is thought that the essential features of the invention both as to process and apparatus will be readily apparent without further description, and it will be understood that any changes, within the scope of the appended claims, may be resorted to without departing from the spirit of the invention or sacrificing any of the advantages thereof.

I claim:

1. A process for rolling tie-plate bars which consists in passing the bar blank through a roll pass to produce a shape having projections of metal upon both sides and adjacent both lateral edges thereof, the projections on one face of the blank being directly opposite those on the other face of the blank, and subsequently subjecting the blank to a series of passes which redistribute the metal from all of said projections into a single pair of ribs at one side only of-the bar.

2. A process of rolling tie-plate bars which consists in passing a bar blank through a roll pass to produce a shape hav ing projectionsof metal upon both sides thereof and adjacent both lateral edges, and subsequently subjecting said shape to a series of passes which redistribute the'metal into a single pair of shouldered ribs upon one side only of the bar.

3. A process of rolling tie-plate bars which consists in passing a bar blank through a roll pass to produce a shape having directly opposite projections of metal 'upon both sides thereof and adjacent both lateral edges, then subjecting the said shape to other passes which redistribute the metal to obliterate the projections on one side and to form a single pair of shouldered ribs rat lllltl' int y Mllhll upon the other side of the shape, and finally subjecting the blank to a pass'which displaces the metal from the inner side of one of theribs forming a'reces s therein.- 4. A process of rolling tie-plate barsv which consists in passing a bar blank through a roll pass to produce a shape havingdirectly opposite projections of 'metal upon both sides thereof and adjacent both lateral edges, then subjecting the said shape L to other passes which redistribute the metal -to obliterate the projectionson one'side and to form a single pair of shouldered ribs 1 upon the other side of the shape, and finally subjecting the blank to a pass which displaces the metal from the inner side of one of the ribsforming a recess therein and also i which (consists in passing a bar blank through a roll pass to form a shape having directly opposite projections of metal at both sides and adjacent both lateral edges thereof, then subjecting the blank to other passes which redistribute the metal from said projections into a single pair of ribs projecting from one side of the blank only, subsequently displacing metal from the floor 9f theblank adjacent one of the ribs forming a counter-sink, and finally shearing the bar blank at points between the countersinks. I L

In testimony whereof I hereunto afiix my signature in the presence of two witnesses.

WILLIAM J. BRADLEY.

' Witnesses:

- U. L; EooERs,

-E. S M TH. 

